Cloth-clamp



N TED *sT TEs PATENT OFFICE.

HUGO 0. WIEGAND, F PHILADELPHIA, PENNSYLVANIA, ASSIG-NOR 'ro H. w.

, BUTTERWORTI-I & soNs COMPANY, A conPoEA'rIoN OF PENNSYLVANIA.

Specification of Letters Patent.

. U cLorH-c AMP.

Patented June 24, 1919.

Application filed January 14, 1918. Serial No. 211,704.

To all whom it may concern: a

' Be it known that I, HUGO O. WIEGAND, a citizen of the UnitedStates, and resident of Philadelphia, county of Philadelphia, and State of Pennsylvania,-have invented an Improvement in Cloth-Clamps, of which the following is a specification.

My invention has for an object the construction of an automatic cloth clamp for employment in textile machinery; and more especially tentering machines, which shall be effective in its operation and proof against the working upward of ease or oil from the chain structure of wh1ch it is a part and soiling the fabric while'in the act 'of being clamped in position and while in the custody 'of the clamp during manipulation in'the machine.

Heretofore cloth clamps for textile machinery have been made with brass or bronze cast plates provided with projections and fitted to the surface of thecast iron base of the clamp, but experience has demonstrated that while the facing of the base of the clamp with brass or bronze is an advantage from a structural standpoint ithas been undesirably costly and moreover required modes of attachment-which have permitted leakage of oil or grease to the surface of the plate and thereby caused injury to the fabric being subjected to treatment by machines, such as tentering machines in which large quantities of these clamps" were employed. It is therefore also the object of my invention to provide a construction of cloth clamp in which the facing plate of brass or bronze may be formed of stamped sheet metal hav ing a flanged and grooved edge to engage and lock. with the cast base of the clamp thereby embodying lightness and cheapness coupled with accuracy as to shape and strength of attachment, and also to present a finished surface without requiring surfacing by machine work, whereby my improved clamp is more effective in its operation and less costly to produce.

My object is further to stamped sheet metal plate that it willhook over the front edge of the iron casting of the clamp base and be held in position by a single rivet in the rear of the plate whereby there shall be no screw or rivet holes extend- 'ing upward to the surface of those portions of the plate overwhich the cloth is required so shape the 7 there is less liability to soil the fabric by oil or grease.

My invention also consists of improvements hereinafter described whereby the above objects and results are attained, said improvements comprising certain organizatlon and combination of parts which are fully described hereinafter and more particularly defined in the claims.

For the purpose of illustrating my invention, I have shown in the accompanying drawings the embodiment thereofwhich is at present preferred by me, since the same is in form to give satisfactory and reliable results, but it is to be understood that the several instrumentalities of which my invention consists, can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities herein shown and described.

Referring to the drawings Figure '1 is a front elevation of a cloth clamp embodying my improvements; Fig. 2 is a cross sectional view of the same taken on line 22 of Fig. 1; and Fig. 3 is a perspective view of the stamped sheet metal clamping plate removed from the base of the clamp.

2 represents one of the chain links forming the carrying part of the clamping device which is cast integral therewith. 3 is the base of the clamp and forms an extended 7 surface immediately above the link 2, and said base is provided with the usual overhanging arms 8 whose free ends extend slightly in advance of the front edge of the base of the clamp. The upper surface of the base may be roughly machined to make it flat and the front edge may be machined to the shape indicated at 3 in Fig. 2, the lower-part of this portion 3 being undercut as illustrated. 5 is a stamped sheet metal plate, preferably of brass or bronze and is provided at its forward or side end with a downwardly and inwardly bent portion 7 providing a longitudinal groove 7 which is of theexact shape ofthe cross section of the machined edge 3 of the base of the clamp. This plate 5 is fitted tightly upon theportion' ifi of the base 3 and said portion 3 is snugly received in the longitudinal groove 7 a of the plate. The plate is pressedtightly in posit-ion. and riveted in such position by a single. rivet 17 extending upward through the base 3 and through a countersunk hole the rear or shifting forward upon the base, and a clamping jaw hinged to the body above the clamping plate and adapted to contact therewith near its forward edge.

2. A detachable clamping plate for a cloth clamp comprising a stamped sheet metal plate wide at its front edge and narrowed at its rear edge and having an aperture near its rear edge, a slot intermediate of said edges, and said plate further having its front edge bent downward and backward to form a longitudinal groove of approximately uniform cross section to facilitate attachment and to give rigidity to the clamping surface between the slot and front edge.

In testimony of which invention I hereunto set my hand.

HUGO O. WIEGAN D.

Witnesses:

CHARLES C. W. IDLER, HARRY W. PEARCE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of l'atentl Washington, D. G. 

